You must download all three parts, which will be:

*.exe

*.r00

*.r01

After downloading, put all three files in the same folder and run the *.exe file - it will automatically connect to the other files it needs.

Personal Copy v5r2 DOWNLOAD pc51dm.exe (8,750k)

DOWNLOAD pc51dm.r00 (8,750k)

DOWNLOAD pc51dm.r01 (8,737k)

Unison v1.0 DOWNLOAD Unison.exe (6,202k)

DOWNLOAD Unison.r00 (6,202k)

DOWNLOAD Unison.r01 (6,018k)